Properties

Label 2.12.18.79
Base \(\Q_{2}\)
Degree \(12\)
e \(12\)
f \(1\)
c \(18\)
Galois group $C_2 \times S_4$ (as 12T24)

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Defining polynomial

\( x^{12} + 2 x^{9} + 2 x^{7} + 2 x^{2} - 2 \)

Invariants

Base field: $\Q_{2}$
Degree $d$ : $12$
Ramification exponent $e$ : $12$
Residue field degree $f$ : $1$
Discriminant exponent $c$ : $18$
Discriminant root field: $\Q_{2}$
Root number: $-1$
$|\Aut(K/\Q_{ 2 })|$: $4$
This field is not Galois over $\Q_{2}$.

Intermediate fields

$\Q_{2}(\sqrt{-*})$, 2.3.2.1, 2.6.6.8, 2.6.8.2, 2.6.8.3

Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.

Unramified/totally ramified tower

Unramified subfield:$\Q_{2}$
Relative Eisenstein polynomial:\( x^{12} + 2 x^{9} + 2 x^{7} + 2 x^{2} + 6 \)

Invariants of the Galois closure

Galois group:$C_2\times S_4$ (as 12T24)
Inertia group:$A_4 \times C_2$
Unramified degree:$2$
Tame degree:$3$
Wild slopes:[4/3, 4/3, 2]
Galois mean slope:$19/12$
Galois splitting model:$x^{12} - 2 x^{11} + 8 x^{10} - 4 x^{9} + 5 x^{8} + 10 x^{7} - 14 x^{6} - 10 x^{5} + 5 x^{4} + 4 x^{3} + 8 x^{2} + 2 x + 1$